In a flexible budget, what will happen to fixed costs as the activity level increases? The fixed cost per unit will decrease. b. The fixed cost per unit will increase The fixed cost per unit will remain unchanged. d. Fixed costs are not included in a flexible budget. Millionaires Corporation uses a job-order costing system that uses a single plantwide predetermined overhead rate based on machine hours. The company based its predetermined overhead rate for the current year on the following estimated data: Total estimated machine hours 25 600 Mh Total estimated MOH cost $588,800 Recently, Job KF75 was completed with the following characteristics: #of units in the job Machine hours used for job KF75 Direct materials cost for job KF75 Direct labor cost for job KF75 $3.911 The cost per unit for Job KF75 is closest to: $322.55 6.5299.55 $345.25 d5119.45 O $361.65